What is the value of y?

9514 1404 393

Answer:

Step-by-step explanation:

When x represents the number, "the sum of 3 and a number" is (x+3). Twice that sum is 2(x+3). "Is 30" means this expression is equal to 30:

  2(x +3) = 30 . . . . an equation for the given conditions

__

We can solve this equation by dividing by 2:

  x + 3 = 15

  x = 12 . . . . . . subtract 3

The number is 12.

Answer:

D. -i

Step-by-step explanation:

I took the quiz and got a 100%

The required value of the complex number [tex]i^{31}[/tex] = -i.

Given that,
To determine the value of complex numbers [tex]i^{31}[/tex].

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication and division,

The number that are constitute of real and imaginary numbers are called complex number. complex number can be represents as z = a+ ib ,where a = real part and bi = imaginary part.

Here,
[tex]i^4 = 1[/tex] and [tex]i^3 = -i[/tex]

For complex numbers [tex]i^{31}[/tex]

[tex]=i^{31}\\=(i^4)^7.i^3\\=1.-i\\=-i[/tex]

Thus, the required value of the complex number [tex]i^{31}[/tex] = -i.

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Answer:

2 by 4 inches

Step-by-step explanation:

If you divide 2 1/2 by 5/4 and 5 by 5/4, you get 2 by 4 inches.

(Edit: I fixed it)

Answer:

The scale factor is a reduction, and the new card should be 4 in x 2 in.

Step-by-step explanation:

Answer:

160

Step-by-step explanation:

Given parameters:

Actual length = 260m

Drawing length = 286mm

Unknown:

Scale used = ?

Solution:

A scale compares drawing length to ground distance;

                    To find the scale,

Express the two quantities in the same unit;

       actual length  = 260 x 10⁻³m = 0.26mm

  Now;

           drawing length : actual length

                  286mm : 260 x 10⁻³mm

                  divide by 286;

                     1mm on drawing  : 9 x 10⁻⁴mm on map

   or;

                     1mm on drawing is 0.9m on ground

The amount of kinetic energy required to move a couch is most likely to be a function of the weight of the couch.

In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.

Kinetic energy is directly proportional to the mass of the object and to the square of its velocity.

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Answer: it’s 120

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

The part of the function where x <=2 is a line, so we can rule out C and D. Lastly, the part of the function where x<=2 has a slope of -2, so we can rule out A. That leaves us with the only possible answer B

Answer:

[tex] \huge \boxed{ \sf{ \{ 0 \} }}[/tex]

Step-by-step explanation:

[tex] \sf{A} \: = \: [/tex] { -6 , 0 , 6 }

[tex] \sf{B} \: = [/tex]{ -1 , 0 , 1 }

A ∩ B

A ∩ B = { -6 , 0 , 6 } { -1 , 0 , 1 }

A ∩ B = { 0 }

Remember : In case of intersection , the common element of two sets A and B should be listed in a single set. So, the intersection of sets A and B is the set of all elements which belong to both A and B. The intersection of sets A and B is denoted by ( A ∩ B ) and read as A intersection B.

Hope I helped!

Best regards! :D

~[tex] \text{TheAnimeGirl}[/tex]

Answer:

B.

Step-by-step explanation:

First you need to figure out how many numbers there are, so with this you can simply count 10. Then use the formula to plug in the numbers: 10(22-77)/2 to get the answer.

The required sum of the arithmetic progression is -275.

The arithmetic sequence is given 22, 11, 0, -11, ..., –77, sum of the sequence is to be determined.

Arithmetic progression is the series of numbers that have common differences between adjacent values

Here,
first term (a) = 22
Last term (l) = -77

Now,
l = a + (n - 1)d
-77 = 22 + (n - 1) *(-11)
-77 - 22 = (n - 1)(-11)
n - 1 = 9
n = 10

Now,
sum of the arithmetic sequence,
s = n / 2 [a + l]
s = 10 / 2 [22 - 77]
s = 5 [-55]
s = -275

Thus, the required sum of the arithmetic progression is -275.

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Answer:

sorry dont know

Step-by-step explanation:

30 oite 904-=

Answer:

im sorry if not but i think its 7.24

Step-by-step explanation:

Step-by-step explanation:

[tex]2 \sqrt{x} = \: x - 3 [/tex]

[tex] ({ 2 \sqrt{x} )}^{2} = \: {x}^{2} - {3}^{2} [/tex]

[tex]4x = {x}^{2} - 9[/tex]

[tex] {x}^{2} - 4x - 9 = 0[/tex]

[tex]x = 5.60 \: and \: x = - 1.60[/tex]

Answer:

Y'=(2,-4)

Z'=(8,0)

Step-by-step explanation:

X + T = X'

(2,3) + (T) = (5,-2)

T = (3,-5)

Y' = Y + T = (2,-4)

Z' = Z + T = (8,0)

Answer:

c

need brainest

Step-by-step explanation:

the male smoke more

Step-by-step explanation:

the male smoke more because 27 out of 193 and 16 out of 169 females smoke

Answer:

$4

Step-by-step explanation:

Divide $48 by 12

(Because there are 12 months in a year)

Your answer is $4

$48 divided along 12 months = $4

Hope I helped :)

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Answer:

$4

To find the amount Rae pays each month, we have to divide 48 by 12 (because there are 12 months in a year.)

48 ÷ 12 = 4.

Answer = $4.

Hope this helps!

A. Do 4.49 times 6 B. Do 150 divided by 8 C. I belive you add the answers for A and B and then subtract that from 400 and then that’s your answer for part C

Answer:

20, 50, 70, 110

Step-by-step explanation:

boys x simpsons: 20

girls x long ranger: 50

girls x simpsons: 70

total x sesame street: 110

have a great day :)

20 girls watch Long Ranger , 110 first graders watch Sesame Street , 20 boys watch Simpsons, and 70 girls watch Simpsons.

" Random sampling is a process of observing samples using such technique that each sample has equal probability."

According to the question,

As per the information of random samples given in the table,

Total number of boys are  = 100

Total number of girls = 200

For boys

Long Ranger + Sesame Street + Simpsons = 100

⇒  50 + 30 + Simpsons = 100

⇒ Number of boys view Simpsons = 100 - 80

                                                          = 20

In Long  ranger column,

50 Boys + ___girls = 100

⇒ Number of girls watching Long Ranger = 100 -50

                                                                   = 50

In Sesame street

30 boys + 80 girls = 110 Total viewers

Number of girls watching Simpsons = 90 -20

                                                            = 70

Hence, 20 girls watch Long Ranger , 110 total boys and girls watch Sesame Street , 20 boys watch Simpsons, and 70 girls watch Simpsons.

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Answer:

12

Step-by-step explanation: if she has 12 pounds lasagna and make 1 pounds she can make 12 pounds for 12 people? hope this help you ;]

Answer:

36

Step-by-step explanation:

Answer:

one fourth a number minus three

¼x-3

Quantity of water with Henri = 16 litres

Quantify of water he will need for one cup of coffee = 200 ml

Number of cups of coffee he can make with a full cup of water :-

[tex] = 16 \: litres \: = 16000 \: ml[/tex]

[tex] = \frac{16000}{200} [/tex]

[tex] = 80 \: cups \: of \: coffee[/tex]

So , Henri can make 80 cups of coffee with one full bottle of water .

Quantity of water needed to make 80 cups of coffee = 16,000 ml

Quantity of water needed to make one cup of coffee :-

[tex] = \frac{16000}{80} [/tex]

[tex] = 200 \: ml[/tex]

So , 200 ml of water is needed to make one cup coffee .

Quantity of water he needs to make 250 cups of coffee :-

[tex] = 200 \times 250[/tex]

[tex] = 50000 \: ml[/tex]

So , Henri needs 50,000 ml of water to make 250 cups of coffee .

Number of water containers he will use :-

[tex] = \frac{50000}{16000} [/tex]

[tex] = 3.125 \\ = 3 \: water \: containers[/tex]

So , Henri will use 3 full water containers to make 250 cups of coffee .

Money charged per one coffee = 8 cents

Money charged for 250 coffees :-

[tex] = 250 \times 8[/tex]

[tex] = 2000 \: cents[/tex]

So , Henri will make 2000 cents if he sells 250 cups of coffee .

Therefore , Henri will use 3 full containers of water to make 250 cups of coffee and he he will make 2000 cents by selling 250 cups of coffee .

Answer:

the answer is $33.04

Step-by-step explanation:

since the total cost was $165.20 and we need to find the cost of one  video game we will divide the the total ($165.20) with 5 video games and you will get $33.04

Step-by-step explanation:

Ok so if you didn't know, : is another way to write / so 24:28 is the same thing as 24 divided by 28. Or if you just wanted to simplify to most, you just want to find the largest common factor and divide it by both.

24:28 = 6:7

250:400 = 5:8

270:30 = 9:1

4:80 = 1:20

55:33 = 5:3

1000:100 = 100:10

560:80 = 7:1

20:340 = 1:17

Answer: 24:28= 6:7

250:400= 5:8

4:80= 1:20

55:33= 5/3

1000:100= 10:1

560:80= 7:1

20:340= 1:17

Step-by-step explanation:

Divide the numbers on each side of the ratio by Common Factors until what's left can't be divided any further.

One example, last one:

20:340 both divisible by 10, so you get 2:34. Both even numbers so divide by 2. You get 1:17. They can't be divided any further to get whole numbers, so that's the answer.

Answer:

The triangles are not similar to each other .